Final answer:
A resource that may be used to determine if a parenteral medication must be filtered is the package insert, Handbook on Injectable Drugs, and the manufacturer.
Step-by-step explanation:
In order to determine if a parenteral medication must be filtered, one can consult several resources:
- The package insert: This is the information provided by the manufacturer and includes instructions on how to use the medication, including whether filtration is required.
- The Handbook on Injectable Drugs: This comprehensive guide provides information on injectable medications, including recommendations on filtration.
- The manufacturer: The manufacturer can provide specific instructions on how to handle and administer the medication, including whether filtration is necessary.
Therefore, the correct answer is All of the above.